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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    Python sets are very much like mathematical sets, and support operations like set intersection and union. Python also features a frozenset class for immutable sets, see Collection types. Dictionaries (class dict) are mutable mappings tying keys and corresponding values. Python has special syntax to create dictionaries ({key: value})

  3. Option type - Wikipedia

    en.wikipedia.org/wiki/Option_type

    In programming languages (especially functional programming languages) and type theory, an option type or maybe type is a polymorphic type that represents encapsulation of an optional value; e.g., it is used as the return type of functions which may or may not return a meaningful value when they are applied.

  4. Futures and promises - Wikipedia

    en.wikipedia.org/wiki/Futures_and_promises

    In computer science, futures, promises, delays, and deferreds are constructs used for synchronizing program execution in some concurrent programming languages.Each is an object that acts as a proxy for a result that is initially unknown, usually because the computation of its value is not yet complete.

  5. Python (programming language) - Wikipedia

    en.wikipedia.org/wiki/Python_(programming_language)

    Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. [33] Python is dynamically type-checked and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional ...

  6. Contingent claim - Wikipedia

    en.wikipedia.org/wiki/Contingent_claim

    In financial economics, contingent claim analysis is widely used as a framework both for developing pricing models, and for extending the theory. [6] Thus, from its origins in option pricing and the valuation of corporate liabilities, [7] it has become a major approach to intertemporal equilibrium under uncertainty.

  7. Modal logic - Wikipedia

    en.wikipedia.org/wiki/Modal_logic

    contingent if it is not necessarily false and not necessarily true (i.e. possible but not necessarily true); impossible if it is not possibly true (i.e. false and necessarily false). In classical modal logic, therefore, the notion of either possibility or necessity may be taken to be basic, where these other notions are defined in terms of it ...

  8. Zen of Python - Wikipedia

    en.wikipedia.org/wiki/Zen_of_Python

    The Zen of Python is a collection of 19 "guiding principles" for writing computer programs that influence the design of the Python programming language. [1] Python code that aligns with these principles is often referred to as "Pythonic". [2] Software engineer Tim Peters wrote this set of principles and posted it on the Python mailing list in ...

  9. Contingent payment sales - Wikipedia

    en.wikipedia.org/wiki/Contingent_payment_sales

    David Van Benschoten, General Mills’ treasurer, added that the contingent payment was another example of the “development of the use of [options] in the past 20 years as finance has come to first understand, and work with, the constructs of optionality.”